The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 791-28-6, Name is Triphenylphosphine oxide, SMILES is O=P(C1=CC=CC=C1)(C2=CC=CC=C2)C3=CC=CC=C3, in an article , author is Frynas, Slawomir, once mentioned of 791-28-6, HPLC of Formula: C18H15OP.
[4+2] Cycloaddition of Vinylphosphine Oxides to alpha-Oxy-o-xylylene as a route to Phosphorylated Naphthyl and Biaryl Scaffolds
alpha-Oxy-o-xylylene, a highly reactive diene readily accessible from benzocyclobutenol, undergoes Diels-Alder reaction with vinylphosphine oxides, yielding the corresponding 2-phosphorylated 1-hydroxy-1,2,3,4-tetrahydronaphthalenes in excellent yields. Use of unsubstituted and trans-2-aryl-substituted vinylphosphine oxides leads to cycloadducts with complete regioselectivity and with cis/trans selectivity up to 19:1 in the most favorable case. In the case of P-stereogenic trans-2-aryl-substituted vinylphosphine oxides, a virtually complete chirality transfer from P to C can be achieved. Dehydration and aromatization of the obtained cycloadducts bearing the resolved P-stereogenic phosphinoyl groups can be carried out to afford the valuable P-stereogenic and axially chiral phosphorylated 1,2′-binaphthyl ring system. Cases of restricted rotation around Csp(3)-Csp(2) single bond in some tetrahydronaphthalene cycloadducts have also been revealed.
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Reference:
Phosphine ligand,
,Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate